My soaked shirt

Dear Mr. ****,
I'm sorry,
That I was late for school.
I had already gotten my tardy slip,
But I couldn't bare to watch through the car window,
as my grandmother just sat there,
hair a tangled mess, and eyes red from cry,
I know that her tears won't stop.
So, I went up to her,
Taking a seat,
before she began crying again,
this time on my shoulder.
Stories of how great he was,
how smart and caring grandfather was towards everyone,
leak out in sobs.
When my mother came down,
thinking that we're already at school,
only to find that I was sitting there,
shirt drenched from tears.
"Get to school, you'll be late"
Her voice wasn't, it's normal strictness,
from other time when she found out we were late.
It was gentle, with a touch of sadness that filled her dark eyes.
I quietly got on the car, my brother didn't dare to speak a word,
but I understand why, it wasn't just grandmother's tears that soaked my shirt.
There were mine, too.